Is it possible to tile a 9x9 square using triominos?
Is it possible to tile a 9x9 square using triominos so all 8 horizontal and 8 vertical lines between tiles are intersecting at least one triomino?
2026-03-26 14:26:13.1774535173
tiling rectangle using triominos
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It is not about proof (which, BTW, can be found by the very first Google link, and is quite mechanical and unexciting). Cut some trominoes (not triominoes, mind you) from cardboard paper and play with them for a while. Have fun. I mean, have fun the next time, because this time I'm going to claim the fun for myself.